Hey,
Been just installing fresh Owncloud on Centos 7 64bit and keep getting blank screen 
sweat:
yum install httpd
wget dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
wget rpms.remirepo.net/enterprise/remi-release-7.rpm
yum -y install ./*rpm
yum-config-manager --enable remi-php70
yum install php
wget https://download.owncloud.org/download/repositories/stable/CentOS_7/ce:stable.repo
mv ce:stable.repo /etc/yum.repos.d
yum install owncloud-files
Expected behaviour
Wizard screen as per:
https://doc.owncloud.org/server/latest/admin_manual/installation/installation_wizard.html
Actual behaviour
blank page within browser
Server configuration
CentOS Linux release 7.4.1708 (Core) --> 3.10.0-693.5.2.el7.x86_64
minimial install
selinux disabled
firewalld disabled
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
tcp 0 36 10.254.1.79:22 10.254.1.2:65356 ESTABLISHED
tcp 0 0 10.254.1.79:22 10.254.1.2:65371 ESTABLISHED
tcp6 0 0 :::80 :::* LISTEN
tcp6 0 0 :::22 :::* LISTEN
Web server:
httpd-2.4.6-67.el7.centos.6.x86_64
Server version: Apache/2.4.6 (CentOS)
Server built: Oct 19 2017 20:39:16
Database:
N/A yet, didn't get so far
PHP version:
PHP 7.0.26 (cli) (built: Nov 21 2017 15:12:20) ( NTS )
Copyright (c) 1997-2017 The PHP Group
Zend Engine v3.0.0, Copyright (c) 1998-2017 Zend Technologies
ownCloud version: (see ownCloud admin page)
10.x latest stable ( i guess 10.3)
Updated from an older ownCloud or fresh install:
fresh and clean install
Where did you install ownCloud from:
https://download.owncloud.org/download/repositories/stable/CentOS_7/
Signing status (ownCloud 9.0 and above):
N/A
The content of config/config.php:
udo -u apache php /var/www/html/owncloud/occ config:list system
The posix extensions are required - see http://php.net/manual/en/book.posix.php
php -m
[PHP Modules]
bz2
calendar
Core
ctype
curl
date
exif
fileinfo
filter
ftp
gettext
hash
iconv
json
libxml
openssl
pcntl
pcre
Phar
readline
Reflection
session
sockets
SPL
standard
tokenizer
zlib
List of activated apps:
N/A
Are you using external storage, if yes which one: local/smb/sftp/...
N/A
Are you using encryption: yes/no
no
Are you using an external user-backend, if yes which one: LDAP/ActiveDirectory/Webdav/...
no
Client configuration
Browser:
firefox 57
Operating system:
Windows 10
Logs
nothing on client
Web server error log
[Sun Nov 26 22:40:28.716194 2017] [suexec:notice] [pid 2020] AH01232: suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Sun Nov 26 22:40:28.762632 2017] [auth_digest:notice] [pid 2020] AH01757: generating secret for digest authentication ...
[Sun Nov 26 22:40:28.763459 2017] [lbmethod_heartbeat:notice] [pid 2020] AH02282: No slotmem from mod_heartmonitor
[Sun Nov 26 22:40:28.783091 2017] [mpm_prefork:notice] [pid 2020] AH00163: Apache/2.4.6 (CentOS) PHP/7.0.26 configured -- resuming normal operations
[Sun Nov 26 22:40:28.783135 2017] [core:notice] [pid 2020] AH00094: Command line: '/usr/sbin/httpd -D FOREGROUND'
[Sun Nov 26 23:14:00.759701 2017] [mpm_prefork:notice] [pid 2020] AH00170: caught SIGWINCH, shutting down gracefully
[Sun Nov 26 23:14:01.881248 2017] [suexec:notice] [pid 3712] AH01232: suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Sun Nov 26 23:14:01.931415 2017] [auth_digest:notice] [pid 3712] AH01757: generating secret for digest authentication ...
[Sun Nov 26 23:14:01.932189 2017] [lbmethod_heartbeat:notice] [pid 3712] AH02282: No slotmem from mod_heartmonitor
[Sun Nov 26 23:14:01.969333 2017] [mpm_prefork:notice] [pid 3712] AH00163: Apache/2.4.6 (CentOS) PHP/7.0.26 configured -- resuming normal operations
[Sun Nov 26 23:14:01.969379 2017] [core:notice] [pid 3712] AH00094: Command line: '/usr/sbin/httpd -D FOREGROUND'
ownCloud log (data/owncloud.log)
{"reqId":"Whs3JvErY8NJjtO2c4KiUwAAAAA","level":3,"time":"2017-11-26T21:50:30+00:00","remoteAddr":"10.254.1.2","user":"--","app":"PHP","method":"GET","url":"\/owncloud\/index.php","message":"Error: Call to undefined function OC\App\simplexml_load_file() at \/var\/www\/html\/owncloud\/lib\/private\/App\/InfoParser.php#41"}
{"reqId":"Whs3JvErY8NJjtO2c4KiUwAAAAA","level":3,"time":"2017-11-26T21:50:30+00:00","remoteAddr":"10.254.1.2","user":"--","app":"PHP","method":"GET","url":"\/owncloud\/index.php","message":"You are using a fallback implementation of the intl extension. Installing the native one is highly recommended instead. at \/var\/www\/html\/owncloud\/lib\/composer\/patchwork\/utf8\/src\/Patchwork\/Utf8\/Bootup\/intl.php#18"}
{"reqId":"Whs3OzBMUBugQSyZRLbeTAAAAAE","level":3,"time":"2017-11-26T21:50:51+00:00","remoteAddr":"10.254.1.2","user":"--","app":"PHP","method":"GET","url":"\/owncloud\/index.php","message":"Error: Call to undefined function OC\App\simplexml_load_file() at \/var\/www\/html\/owncloud\/lib\/private\/App\/InfoParser.php#41"}
{"reqId":"Whs3OzBMUBugQSyZRLbeTAAAAAE","level":3,"time":"2017-11-26T21:50:51+00:00","remoteAddr":"10.254.1.2","user":"--","app":"PHP","method":"GET","url":"\/owncloud\/index.php","message":"You are using a fallback implementation of the intl extension. Installing the native one is highly recommended instead. at \/var\/www\/html\/owncloud\/lib\/composer\/patchwork\/utf8\/src\/Patchwork\/Utf8\/Bootup\/intl.php#18"}
{"reqId":"Whs3RGFOHpbKVoRsXeoi-QAAAAI","level":3,"time":"2017-11-26T21:51:00+00:00","remoteAddr":"10.254.1.2","user":"--","app":"PHP","method":"GET","url":"\/owncloud\/index.php","message":"Error: Call to undefined function OC\App\simplexml_load_file() at \/var\/www\/html\/owncloud\/lib\/private\/App\/InfoParser.php#41"}
{"reqId":"Whs3RGFOHpbKVoRsXeoi-QAAAAI","level":3,"time":"2017-11-26T21:51:00+00:00","remoteAddr":"10.254.1.2","user":"--","app":"PHP","method":"GET","url":"\/owncloud\/index.php","message":"You are using a fallback implementation of the intl extension. Installing the native one is highly recommended instead. at \/var\/www\/html\/owncloud\/lib\/composer\/patchwork\/utf8\/src\/Patchwork\/Utf8\/Bootup\/intl.php#18"}
{"reqId":"Whs325nfGb2XZ7CS6KyT0QAAAAY","level":3,"time":"2017-11-26T21:53:31+00:00","remoteAddr":"127.0.0.1","user":"--","app":"PHP","method":"GET","url":"\/owncloud\/index.php","message":"Error: Call to undefined function OC\App\simplexml_load_file() at \/var\/www\/html\/owncloud\/lib\/private\/App\/InfoParser.php#41"}
{"reqId":"Whs325nfGb2XZ7CS6KyT0QAAAAY","level":3,"time":"2017-11-26T21:53:31+00:00","remoteAddr":"127.0.0.1","user":"--","app":"PHP","method":"GET","url":"\/owncloud\/index.php","message":"You are using a fallback implementation of the intl extension. Installing the native one is highly recommended instead. at \/var\/www\/html\/owncloud\/lib\/composer\/patchwork\/utf8\/src\/Patchwork\/Utf8\/Bootup\/intl.php#18"}
{"reqId":"YvKG9L3NmMBwKbZFFlVD","level":3,"time":"2017-11-26T22:08:58+00:00","remoteAddr":"","user":"--","app":"PHP","method":"--","url":"--","message":"You are using a fallback implementation of the intl extension. Installing the native one is highly recommended instead. at \/var\/www\/html\/owncloud\/lib\/composer\/patchwork\/utf8\/src\/Patchwork\/Utf8\/Bootup\/intl.php#18"}
{"reqId":"Whs8vSgPiQQLWK5EcBtXWwAAAAQ","level":3,"time":"2017-11-26T22:14:21+00:00","remoteAddr":"10.254.1.2","user":"--","app":"PHP","method":"GET","url":"\/owncloud\/index.php","message":"Error: Call to undefined function OC\App\simplexml_load_file() at \/var\/www\/html\/owncloud\/lib\/private\/App\/InfoParser.php#41"}
{"reqId":"Whs8vSgPiQQLWK5EcBtXWwAAAAQ","level":3,"time":"2017-11-26T22:14:21+00:00","remoteAddr":"10.254.1.2","user":"--","app":"PHP","method":"GET","url":"\/owncloud\/index.php","message":"You are using a fallback implementation of the intl extension. Installing the native one is highly recommended instead. at \/var\/www\/html\/owncloud\/lib\/composer\/patchwork\/utf8\/src\/Patchwork\/Utf8\/Bootup\/intl.php#18"}
{"reqId":"Whs8vigPiQQLWK5EcBtXXAAAAAQ","level":3,"time":"2017-11-26T22:14:22+00:00","remoteAddr":"10.254.1.2","user":"--","app":"PHP","method":"GET","url":"\/owncloud\/index.php","message":"Error: Call to undefined function OC\App\simplexml_load_file() at \/var\/www\/html\/owncloud\/lib\/private\/App\/InfoParser.php#41"}
{"reqId":"Whs8vigPiQQLWK5EcBtXXAAAAAQ","level":3,"time":"2017-11-26T22:14:22+00:00","remoteAddr":"10.254.1.2","user":"--","app":"PHP","method":"GET","url":"\/owncloud\/index.php","message":"You are using a fallback implementation of the intl extension. Installing the native one is highly recommended instead. at \/var\/www\/html\/owncloud\/lib\/composer\/patchwork\/utf8\/src\/Patchwork\/Utf8\/Bootup\/intl.php#18"}
{"reqId":"yyB4kcorY99rJalELyB1","level":3,"time":"2017-11-26T22:14:29+00:00","remoteAddr":"","user":"--","app":"PHP","method":"--","url":"--","message":"You are using a fallback implementation of the intl extension. Installing the native one is highly recommended instead. at \/var\/www\/html\/owncloud\/lib\/composer\/patchwork\/utf8\/src\/Patchwork\/Utf8\/Bootup\/intl.php#18"}
{"reqId":"hIaUK2f158VTrqXEVp2j","level":3,"time":"2017-11-26T22:16:11+00:00","remoteAddr":"","user":"--","app":"PHP","method":"--","url":"--","message":"You are using a fallback implementation of the intl extension. Installing the native one is highly recommended instead. at \/var\/www\/html\/owncloud\/lib\/composer\/patchwork\/utf8\/src\/Patchwork\/Utf8\/Bootup\/intl.php#18"}
Browser log
empty